▪ a group of adversaries or competitors, especially a rival political party or athletic team.Similaropponentsopposing sideother sideother teamcompetitioncompetitorsopposersrivalsadversariesantagonistsenemiesliterary:foes
▪ the principal political party opposed to the one in office.
▪ (of two propositions) the relation of having the same subject and predicate, but differing in quantity, quality, or both.
▪ the apparent position of two celestial objects that are directly opposite each other in the sky, especially when a superior planet is opposite the sun.
Word Originlate Middle English: from Latin oppositio(n-), from opponere ‘set against’.